--- sysstat-4.0.1/sadc.c.verbose	Mon Aug 13 16:03:14 2001
+++ sysstat-4.0.1/sadc.c	Mon Aug 13 16:04:01 2001
@@ -650,7 +650,7 @@
 	    return;
 	 }
 	 if ((size != FILE_HDR_SIZE) || (file_hdr.sa_magic != SA_MAGIC)) {
-	    fprintf(stderr, _("Invalid system activity file\n"));
+	    fprintf(stderr, _("Invalid system activity file: %s\n"), ofile);
 	    exit(3);
 	 }
 	 /*
--- sysstat-4.0.1/sar.c.verbose	Mon Aug 13 16:04:09 2001
+++ sysstat-4.0.1/sar.c	Mon Aug 13 16:04:32 2001
@@ -2120,7 +2120,7 @@
    /* Read sa data file header */
    nb = read(ifd, &file_hdr, FILE_HDR_SIZE);
    if ((nb != FILE_HDR_SIZE) || (file_hdr.sa_magic != SA_MAGIC)) {
-      fprintf(stderr, _("Invalid system activity file\n"));
+      fprintf(stderr, _("Invalid system activity file: %s\n"), from_file);
       exit(3);
    }